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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>LX SYNTHESIS MODEL HULLFORM DEVELOPMENT-NORMALIZED BONJEAN CURVES</title>
      <link>https://trid.trb.org/View/63955</link>
      <description><![CDATA[The sectional area data of the related hullforms were captured in digital form and processed via an active graphics computer program which displayed the sectional area data and facilitated fitting of least-square polynomial bonjean curves for each offset station.  The sectional area data and the derived bonjean curves were transformed to originate at the load waterline and were normalized on the design draft, to promote their use in assessing time and ballast requirements in a synthesis model computer program for wet well-type landing ships.]]></description>
      <pubDate>Wed, 16 Feb 1977 00:00:00 GMT</pubDate>
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      <title>HYDROSTATICS FOR AN IRREGULAR SHAPED HULL</title>
      <link>https://trid.trb.org/View/25003</link>
      <description><![CDATA[Describes a Bonjeans/Hydrostatics Program for Irregular Shaped Hulls such as catamarans, drill ships, and other exotic shapes.  The user defines the hull at each station by a series of strength lines and circular arcs.  From this hull definition the Bonjeans Program computes area and area moments at zero and three degree heel.  This allows the Hydrostatic Program to perform all calculations involving waterplane area independent of half-breadth values.  The flexibility of this program allows hydrostatic properties to be computed for a wide range of forms previously unworkable.  Its capability is unique in the industry and can replace repetitive manual calculations with a quick and reliable computerized method.]]></description>
      <pubDate>Thu, 16 Jan 1975 00:00:00 GMT</pubDate>
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      <title>BONJEANS AND HYDROSTATICS COMPUTER PROGRAM MEOO1</title>
      <link>https://trid.trb.org/View/4090</link>
      <description><![CDATA[A method is presented to compute bonjean and hydrostatic properties of a ship using sectional offset data. Integration is done vertically using straight line and circle approximations, and longitudinally using Simpsons Rule.  The program is part of the Hull Scientific Program Package which also consists of Floodable Length, Capacities and Damaged Stability, and Longitudinal Strength. Communication between the programs is accomplished through the use of a data file containing bonjeans data and offsets.  Program is written in Fortran 4 and requires a memory of about 19,000 words.]]></description>
      <pubDate>Sat, 21 Apr 1973 00:00:00 GMT</pubDate>
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      <title>FLOODABLE LENGTH COMPUTER PROGRAM MDO51</title>
      <link>https://trid.trb.org/View/4092</link>
      <description><![CDATA[The calculation method presented allows computation of the length of a ship's compartment and the longitudinal position of its midlength which, when flooded, will sink the ship to a specified trimmed waterline.  Bonjean data on disk file is required.  The program is part of the Hull Scientific Program Package which also consists of Bonjeans, Hydrostatics, Capacities and Damaged Stability computer programs.  The program is written in Fortran 4 and requires a memory of about 19,000 words.]]></description>
      <pubDate>Sat, 21 Apr 1973 00:00:00 GMT</pubDate>
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      <title>TANK CAPACITIES AND DAMAGED STABILITY COMPUTER PROGRAM MBO79</title>
      <link>https://trid.trb.org/View/4093</link>
      <description><![CDATA[A computerized method is presented for computing the volumes, centers and free surface of any ship tank or space which can be defined by longitudinal or transverse bulkheads and the shell.  Damaged stability calculations can be done using the lost buoyancy method by specifying an initial draft and flooded compartments.  The program is part of the Hull Scientific Program Package which also consists of Floodable Length, Bonjeans, Hydrostatics, and Longitudinal Strength programs.  Communication between the programs is accomplished through the use of a data file containing bonjeans data and offsets.  Program is written in Fortran 4 and requires a memory of about 32,000 words.]]></description>
      <pubDate>Sat, 21 Apr 1973 00:00:00 GMT</pubDate>
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      <title>AN EXPERIMENTAL INTEGRATED SYSTEM FOR APPLICATION OF A COMPUTER IN SHIPBUILDING INDUSTRY</title>
      <link>https://trid.trb.org/View/4082</link>
      <description><![CDATA[To arrive at an integrated system for the use of a computer in the shipbuilding industry attention is first paid to the requirements of a system for communication between shipbuilder and computer.  The result is a problem-oriented language, CLAS.  For this language a compiler, formulated in ALGOL 60, has been developed for the computer CDC 3300. The structure of CALS is similar to some extent to ALGOL 60.  The quantities used however are adapted to the application concerned; simple variables, curves, lists and components being used.  During the execution of the compiled CALS program a software paging technique is applied to control the large amount of data necesary in shipbuilding calculations, even when only a small core store is available.  For the description of curves the so-called gensplines are introduced--generalisations of the spline curves.  For gensplines the curve between two given points is described by a third degree polynomial in the system of axes with x-axis along the chord.  In general slope and curvature are continuous at the given points, if this is not necessary it can be indicated.  Integration and interpolation for gensplines are described in ALGOL 60 since these are important tools in the ship calculations. Within this experimental system attention is given to hydrostatic calculations, smoothing of the hull shape and shell-plate development.]]></description>
      <pubDate>Fri, 21 Apr 1972 00:00:00 GMT</pubDate>
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